title: A thymine tetrad in d(TGGGGT) quadruplexes stabilized with Tl+/Na+ ions.
mesh_terms: D001483:Base Sequence; D001665:Binding Sites; D002412:Cations / Q000737:chemistry; D018360:Crystallography, X-Ray; D004247:DNA / Q000737:chemistry* / Q000378:metabolism; D054856:G-Quadruplexes; D008958:Models, Molecular; D009690:Nucleic Acid Conformation; D012964:Sodium / Q000737:chemistry*; D013793:Thallium / Q000737:chemistry*; D013941:Thymine / Q000737:chemistry* / Q000378:metabolism
chemical_list: D002412:Cations; D004247:DNA; D012964:Sodium; D013793:Thallium; D013941:Thymine